Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu ve hoc snippets" » "lieu va hoc snippets", "hieu ve hoc snippets", "lieu de hoc snippets", "lieu te hoc snippets", "lieu vi hoc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lieu ve hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu ve hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu ve hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu ve hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.